Steam-injector.



No. 645,275. Patented Mar. I3, I900. F. STICKER.

STEAM INJECTOR.

' Appiication filed Feb. 1, 1900.)

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UNITED STATES PATENT OEEicE.

FRANCIS STICKER, OF NE\V YORK, N. Y., ASSIGNOR TO JULIUS C. DRUOKLIEB AND CHARLES A. DRUCKLIEB, OF SAME PLACE.

STEAM -INJECTOR.

SPECIFICATION forming part of Letters Patent No. 645,275, dated March 13, 1900. Application filed February 1, 1900. Serial No. 3,574. (Modeh) T aZZ whom it may concern:

Be it known that I,FRANCIS STIOKER,Of New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Steamdnjectors; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. This invention contemplates certain new and useful improvements in steam-injectors.

The object of the invention is to facilitate the starting of an injector and to simplify and cheapen the cost of construction. The improvement by which these objects are obtained is applicable to all jet apparatus requiring a quick relief. It consists in forming one or more of the tubes or nozzles with longitudinal lateral escapepassages. In Lotters Patent No. 600,454, issued to me on March 8, 1898, I show and describe an injector having a wall in front of the lifter, so that the water in passing over this wall would entirely surround the forcer-tubes. In such an injector care is required in starting-that is, the steam must be admitted slowly and the full head avoided before the injector is in operation, as high steam velocity is apt to drive the water away from the forcing side in 0 an injector in which steam is admitted simultaneously to both the forcer and lifter and form a hindrance to prompt starting. In a pending application for patent filed N overnber 20, 1899, Serial No. 737,681, I show and a describe an injector having a special spillchamber for the combining-tube and the forcer, with an overflow passage-way leading from such chamber, thus providing for the relief or escape of surplus steam, allowinga free starting of the lifter without interference from the forcing ,side and rendering special care in starting either by high or low pressure unnecessary.

The invention will be hereinafter fully set forth, and particularly pointed out in the claims.

In the accompanying drawings, Figure 1 is a vertical longitudinal sectional view of an injector embodying my improvements. Fig. 2 is a view of the cock. Fig. 3 is a view of the combining-tube of the forcer, showing the longitudinal lateral escape-passage on a slightly-curved line. Fig. 4 is an enlarged cross-sectional view on line 4: 4:, Fig. 1.

Referring to the drawings, A designates the case or casting; a, the steam-inlet; a, the steam-chamber common to both the litter and forcer; 0. the water-inlet; a the boiler-outlet, and a the overflow-opening.

B designatesthe forcer, and O the lifter. The delivery-tube l of the lifter opens into discharge-chamber 2, which latteris extended by branch 3 to the water-chamber 1 of the forcer and is provided with a second branch, forming the auxiliary overflow 5, which opens into the overflow-opening (L The combining-tube D of the forcer B ek tends through the spill-chamber 6, from which extends a branch, forming a supplemental overflow 7. The delivery-tube S of the forcer is fitted in a wall 9 of the casing, and the initiatory or overflow discharge therefrom is through the primary overflow 10, which also, like the auxiliary and supplemental overflows, opens into the overflow-opening a The boiler-outlet o leads from the casing adjaoent to the discharge end of the deliverytube.

E is a cock which is passed transversely through the overflow-outlet a*. It has a single port 1) extending therethrough, the same be ing designed to register with the auxiliary, supplemental, and primary overflows. The cock is turned by handle 12 on a spindle 13.

I have shown the combining-tube of the forcer form ed with longitudinal lateral escapepassages whereby instant relief throughout the length of the tube may be obtained, if required, by reason of surplus steam within the forcer. This escape-passage, or there may be two of them in the tube, as shown in Fig. 4, isobtained by forming a fine slot 14: throughout the entire length of the tube. The passage may be continuous and on a straight line or-lines, as shown in Figs. 1 and 5 6, or curved, as shown in Fig. 3. Ihave shown these lateral escape passagesas being formed in the combining-tube of the forcer, but they may be made in any one of the tubes or in severalof them. The formation of these lon- 10o gitudinal lateral passages does not in any way impair the integrity of the tube, nor is the shape of the latter disturbed, nor is any special form of tube required. Any ordinary solid tube or nozzle or parts of the same may, by sawing, coring, or milling a fine slot or slots in places where any sudden relief is required, be made to possess the advantages of my improvement. It will be observed that this feature of my improvement is alike applicable to single-tube injectors, as Well as clouble-tube machines, Where either live or exhaust steam is used.

In operation steam is admitted to chamber a and passes simultaneously through the steam-jets of both the lifter and forcer. As the steam discharged by the lifter reaches the atmosphere through the auxiliary overfiow and the water is lifted and then discharged into chamber 2 it is taken up by the combining-tube of the forcer. Any excess of pressure Within this combining-tube will find a ready outlet through the longitudinal lateral passage-way without disturbing the velocity or volume or direction of the established jet. The spill from the combining-tubethat is,through the longitudinal lateral passageswill before the cock is turned find an outlet through the supplemental overflow 7. As the jet is established and the cock E is turned, cutting off the overflows of the litter and forcer, the established jet will pass to the boiler.

I have found, in actual practice that by reason of the formation of the longitudinal lateral passages the starting is instantaneous, since no back pressure can exist; that the forcer serves also as a lifter during the starting operation, as the forcing-steam is discharged from the lateral passages into the atmosphere through the supplemental overflow, as Well as through the primary overflow 3 that on account of the lifting power of the forcer the water discharged by the lifter is immediately taken up by the forcer by reason of the vacuum formed in the water-chamber ofthe forcer without necessitating any special construction to secure the entrance of the water into the forcer and also with but a few drops of water appearing at the overflow; that the high velocity of steam by higher pressures does not prevent prompt lifting and starting, because there is instant relief, there being no back pressure; that the full-or sudden opening of the steam-controlling valve has no eifect detrimental to the starting of the injector, but, on the contrary, good results are obtained therefrom; that the combined elevating capacity of theforcer and lifter enables water to be lifted from a greater distance and also permits of the use of hot Water; that the subdividing of the reliefs for the lifter and forcer makes a sudden closing of the outlet to the atmosphere possible after the jet is established Without danger of breaking the latter, and, finally, that the instant relief and free outlet of the steam from all of the tubes makes it possible to start the injector immediately at a full head of steam on a lift or under a head of water against any pressure equal or less than the actuating-steam.

I claim as my invention 1. A steam-injector having in one or more of its tubes or nozzles longitudinal lateral escape-passages, as set forth.

2. .A steam-injector having in one or more of its tubes or nozzles a lateral escape passage or passages, extending longitudinally of the tube, on a straight line as set forth.

3. A steam-injector having in one or more of its tubes or nozzles a narrow longitudinal slot or slots forming a lateral escape passage or passages, as set forth.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

FRANCIS STICKER.

YVitnesses:

GRAFTON L. MoGILL, FRANK S. MAGUIRE. 

